Crystal and molecular structure of tris(2-aminocyclopentene-1-dithiocarboxylato)-cobalt (III) monoacetone

The title compound crystallizes in the monoclinic space groupP2₁/c withZ=4 and cell dimensionsa=7.724(1),b=19.274(5),c=18.638(4) Å, and =105.68(2) °. Refinement with 1126 terms, measured with MoK radiation on a diffractometer, has yielded a conventionalR factor of 0.059. The non-hydrogen atoms in the complex molecule were refined with anisotropic temperature factors whereas those in the acetone molecule were refined isotropically. The nitrogen atoms in the complex are not coordinated; the coordination sphere involves Co—S₆ bonding of approximateD₃ symmetry, the average Co—S bond length being 2.275 Å. The geometry of the coordination sphere with respect to a definedC₃ reference axis is similar to that found in several tris(N,N-disubstituted-dithiocarbamato)cobalt(III) complexes. The acetone molecule is hydrogen bonded to one of the amino groups, the O N distance being 2.99 Å.